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by SiXiam
Sun Sep 23, 2012 1:38 am
Forum: Automation, sensing and robotics
Topic: Parallax PING))) ?
Replies: 21
Views: 12605

Re: Parallax PING))) ?

I think the I2C. There is a pin that is supposed to be used for ping, but I'm not sure if anyone got it to work right.

Frankly I gave up after total frustration with how slow and unresponsive the Raspberry Pi is as a programming tool. I suggest remoting into the device.
by SiXiam
Sun Sep 23, 2012 1:10 am
Forum: Automation, sensing and robotics
Topic: Parallax PING))) ?
Replies: 21
Views: 12605

Re: Parallax PING))) ?

Unfortunately the timing method will not work.
The Raspberry Pi can't do timing from the software side, it is too inaccurate.
It must be done from the hardware side.
by SiXiam
Sat Jul 21, 2012 3:08 pm
Forum: Automation, sensing and robotics
Topic: Parallax PING))) ?
Replies: 21
Views: 12605

Re: Parallax PING))) ?

Wouldn't it be better to build this in hardware (setting the PING))) off, counting and triggering)? Then just sending the result to the rPi by using the serial interface or USB? Then we have no need for fancy programming freeing the processor for more important tasks. Just a suggestion... And yes, ...
by SiXiam
Mon Jul 02, 2012 3:03 am
Forum: Automation, sensing and robotics
Topic: Parallax PING))) ?
Replies: 21
Views: 12605

Re: Parallax PING))) ?

Imprecise would be more fitting than inaccurate in this case. 142us is the best timing I've obtained so far between my readings. Right now it is theoretical as I actually haven't returned more than just 0's from the signal pin. I think I can help you out there! ;) After two solid days of effort I m...
by SiXiam
Sat Jun 30, 2012 2:34 pm
Forum: Automation, sensing and robotics
Topic: Parallax PING))) ?
Replies: 21
Views: 12605

Re: Parallax PING))) ?

Any updates on this?
My sensor arrived this week, so I'm just starting to get into the python programming.

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